EP 0503709 B1 19960828 - Colour display tube having an internal magnetic shield
Title (en)
Colour display tube having an internal magnetic shield
Title (de)
Farbbildwiedergaberöhre mit innerer magnetischer Abschirmkappe
Title (fr)
Tube image en couleurs muni d'un capot de blindage magnétique interne
Publication
Application
Priority
- EP 91200505 A 19910308
- EP 91202662 A 19911015
Abstract (en)
[origin: EP0503709A2] Colour display tube having an elongate display screen with a pattern of phosphor dots. In order to render mislanding errors of the electron beams as small as possible, particularly in the y direction, the colour display tube has an internal shield which is provided proximate to its gun-sided open end with means for deflecting the field lines of the axial component of the earth's magnetic field more to the short sides than to the long sides. These means are particularly constituted in that the short sides are provided with edges extending towards the gun, or in that a border strip has been removed from the long sides. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 29/02 (2006.01); H01J 29/06 (2006.01); H01J 29/86 (2006.01)
CPC (source: EP KR US)
H01J 29/06 (2013.01 - EP US); H01J 29/86 (2013.01 - KR)
Designated contracting state (EPC)
AT DE FR GB IT NL
DOCDB simple family (publication)
EP 0503709 A2 19920916; EP 0503709 A3 19931124; EP 0503709 B1 19960828; AT E142047 T1 19960915; DE 69213055 D1 19961002; DE 69213055 T2 19970306; JP H04329245 A 19921118; KR 100220762 B1 19990915; KR 920018812 A 19921022; US 5434470 A 19950718
DOCDB simple family (application)
EP 92200583 A 19920302; AT 92200583 T 19920302; DE 69213055 T 19920302; JP 4855392 A 19920305; KR 920003689 A 19920306; US 32614894 A 19941019